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reserve at most 1 bit for wrapping detection

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This commit is contained in:
cohcho 2020-09-10 12:10:35 +00:00
parent fa0bb0e1bf
commit 30be1cd102
3 changed files with 7 additions and 4 deletions
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6
src/crypto/common/Nonce.cpp
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@ -52,6 +52,7 @@ xmrig::Nonce::Nonce()
bool xmrig::Nonce::next(uint8_t index, uint32_t *nonce, uint32_t reserveCount, uint64_t mask)
{
mask &= 0x7FFFFFFFFFFFFFFFULL;
if (reserveCount == 0 || mask < reserveCount - 1) {
return false;
}
@ -60,7 +61,8 @@ bool xmrig::Nonce::next(uint8_t index, uint32_t *nonce, uint32_t reserveCount, u
while (true) {
if (mask < counter) {
return false;
} else if (mask - counter <= reserveCount - 1) {
}
else if (mask - counter <= reserveCount - 1) {
pause(true);
if (mask - counter < reserveCount - 1) {
return false;
@ -72,7 +74,7 @@ bool xmrig::Nonce::next(uint8_t index, uint32_t *nonce, uint32_t reserveCount, u
}
*nonce = (nonce[0] & ~mask) | counter;
if (mask > 0xFFFFFFFFULL) {
nonce[1] = (nonce[1] & (~mask >> 32)) | (counter >> 32);
nonce[1] = (nonce[1] & (~mask >> 32)) | (counter >> 32);
}
return true;
}